CHEMICAL ENERGY
Energy, potential energy, is stored in the covalent bonds holding atoms together in the form of molecules. This is often called chemical energy.
Chemical energy is the energy of chemical substances that is released when they undergo a chemical reaction and transform into other substances. Some examples of storage media of chemical energy include batteries, food, gasoline, and oxygen gas.
Half life of a radio-active material is refereed to the time required for reducing its activity to 50 %.
Now, when I-131 passes 1st half life, it's activity will reduce to half i.e. 50%
When, I-131 passes 2nd half life, activity of I-131 will be reduced to 25%
On passing, 3rd half-life, percent activity of the I-131 <span>remaining will be 12.5 %.</span>
Answer:
conduction
Explanation:
Conduction is a form of thermal energy transferred through direct contact. Using an oven mitt reduces the amount of heat transferred:)
Answer: 
Explanation:
Required amount of magnesium = 
Given : 1 ton = 2000 lb
1 lb = 453.592 g
Given : 1.4 g of magnesium is produced by 1000 g of sea water
of magnesium is produced by =
g of sea water
Density of sea water = 1.025 g/ml
Volume of sea water =
1 ml = 
Volume of seawater, in cubic meters is 
Answer:
Electrolysis is commercially important as a stage in the separation of elements from naturally occurring sources such as ores using an electrolytic cell
